Microchip Technology

MCP7940N-I/MS  

Real Time Clocks ICs

MCP7940N-I/MS Description

The MCP7940N-I/MS is a high-performance, real-time clock/calendar IC from Microchip Technology, designed for applications requiring accurate timekeeping and date tracking. This device operates within a supply voltage range of 1.8V to 5.5V and has a battery backup voltage range of 1.3V to 5.5V, ensuring reliable performance across various power sources. The MCP7940N-I/MS is compliant with RoHS3 and REACH regulations, making it suitable for environmentally conscious designs. It is also classified as EAR99, indicating it is not subject to export controls.

MCP7940N-I/MS Features

• Alarm, Leap Year, and Square Wave Output: The MCP7940N-I/MS includes an alarm feature for scheduling tasks, leap year compensation for accurate date tracking, and a square wave output for easy integration with microcontrollers.
• SRAM and Time Format: Equipped with 64B of SRAM, this device provides ample memory for storing time and date information. It supports a time format of HH:MM:SS in both 12-hour and 24-hour modes, catering to various applications.
• Low Power Consumption: With a maximum timekeeping current of 1.2µA at 3.3V, the MCP7940N-I/MS is ideal for battery-powered applications where power efficiency is critical.
• Surface Mount Packaging: The device is available in an 8-pin MSOP package, suitable for surface mount applications, making it easy to integrate into compact designs.
• Automotive Grade: The MCP7940N-I/MS is rated for automotive use, ensuring it can withstand the harsh conditions found in automotive environments.

MCP7940N-I/MS Applications

The MCP7940N-I/MS is well-suited for a variety of applications where accurate timekeeping is essential:

• Automotive Systems: Ideal for infotainment systems, telematics, and other automotive electronics requiring precise time and date functions.
• Industrial Control Systems: Useful in systems that require scheduling, logging, or time-based control.
• Portable Electronics: Perfect for devices like smartwatches, fitness trackers, and portable medical devices that need to maintain accurate time.
• Home Automation: Can be used in smart home devices to schedule tasks, control lighting, and manage energy consumption.

Conclusion of MCP7940N-I/MS

The MCP7940N-I/MS from Microchip Technology is a versatile, automotive-grade real-time clock/calendar IC that offers a range of features and benefits for applications requiring precise timekeeping. Its low power consumption, alarm functionality, and robust memory make it an excellent choice for a wide range of electronic devices. With its surface mount packaging and compliance with environmental regulations, the MCP7940N-I/MS is a reliable solution for designers looking to incorporate accurate timekeeping into their products.

MCP7940N-I/MS Documents

Download datasheets and manufacturer documentation for MCP7940N-I/MS

Errata :

MCP7940N Errata      

PCN Assembly/Origin :

Mult Devices 28/Nov/2017      

Datasheets :

MCP7940N       I²C™ & SPI Family Brochure      

PCN Packaging :

Packing Changes 10/Oct/2016       Label and Packing Changes 23/Sep/2015      

Design Resources :

MCP7940N Development Tool Selector      

HTML Datasheet :

I²C™ & SPI Family Brochure      

PCN Design/Specification :

MCP7940N 08/Apr/2022       MCP7940N 31/Oct/2019      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH